• (n.) A tropical South American tree (Nectandra Rodioei), the bark of which yields the alkaloid bebeerine, and the wood of which is known as green heart.
Be·bee'ru noun [ Written also bibiru .] [ Native name.] (Botany) A tropical South American tree ( Nectandra Rodiœi ), the bark of which yields the alkaloid bebeerine, and the wood of which is known as green heart. 
The Bebeeru (Nectandra Rodioei) is a tree of Guyana, yielding green-heart timber.
greenheart (def. 1).